1217225 has 12 divisors (see below), whose sum is σ = 1523340. Its totient is φ = 964800.

The previous prime is 1217219. The next prime is 1217233. The reversal of 1217225 is 5227121.

It can be written as a sum of positive squares in 6 ways, for example, as 559504 + 657721 = 748^2 + 811^2 .

It is not a de Polignac number, because 1217225 - 2¹² = 1213129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1217197 and 1217206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4391 + ... + 4659.

It is an arithmetic number, because the mean of its divisors is an integer number (126945).

2^1217225 is an apocalyptic number.

It is an amenable number.

1217225 is a deficient number, since it is larger than the sum of its proper divisors (306115).

1217225 is a wasteful number, since it uses less digits than its factorization.

1217225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 455 counting only the distinct ones).

The product of its digits is 280, while the sum is 20.

The square root of 1217225 is about 1103.2792031032. The cubic root of 1217225 is about 106.7718959376.

It can be divided in two parts, 121 and 7225, that multiplied together give a square (874225 = 935²).

The spelling of 1217225 in words is "one million, two hundred seventeen thousand, two hundred twenty-five".